here is a video of Second degree type 1 atrioventricular block (Wenckebach phenomenon):
This is a discussion on ECG: 14. Heart Block - Second Degree Type 1 Wenckebach - with Video within the ECG Videos forums, part of the Student Zone category; here is a video of Second degree type 1 atrioventricular block (Wenckebach phenomenon):...
here is a video of Second degree type 1 atrioventricular block (Wenckebach phenomenon):